I try to cache an aggregate consisting of a root object and a
collection of children in the second level cache. I manage to cache
the root entity in the cache but the child collection does not seem to
bee cached. In the mapping file(s) I explicitly add the <cache>
element to the collection and the child element and the config file
contains the necessary entries to enable 2nd level caching.
What am I missing?
My config file (using sql server compact edition and the Hashtable
Cache Provider [for testing purposes only])
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2">
<session-factory>
<property
name="connection.provider">NHibernate.Connection.DriverConnectionProvider</
property>
<property name="dialect">NHibernate.Dialect.MsSqlCeDialect</
property>
<property
name="connection.driver_class">NHibernate.Driver.SqlServerCeDriver</
property>
<property name="connection.connection_string">Data
Source=CachingSample.sdf</property>
<property name="use_outer_join" >true</property>
<property
name="cache.provider_class">NHibernate.Cache.HashtableCacheProvider</
property>
<property name="cache.use_second_level_cache">true</property>
<property name="show_sql">true</property>
</session-factory>
</hibernate-configuration>
the mapping file for my aggregate (the usual sample Blog-->Posts)
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
namespace="Caching"
assembly="Caching">
<class name="Blog">
<cache usage="read-write"/>
<id name="Id">
<generator class="hilo"/>
</id>
<property name="Author"/>
<property name="Name"/>
<set name="Posts" cascade="all" lazy="true">
<cache usage="read-write"/>
<key column="BlogId"/>
<one-to-many class="Post"/>
</set>
</class>
<class name="Post">
<cache usage="read-write"/>
<id name="Id">
<generator class="hilo"/>
</id>
<property name="Title"/>
<property name="Body"/>
</class>
</hibernate-mapping>
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